Gray Herbarium Library, Botany Libraries, Harvard University

Records of the United States Exploring Expedition, 1838-1842 (inclusive), List of plants found in Fiji Islands, Coral Islands, Tahiti, Bellinghausen Islands, Samoa Islands, Tongataboo, Rio de Janeiro, Rio Negro, Orange Harbour, Chile, Peru, with notes. WE 8.

Records of the United States Exploring Expedition, 1838-1842 (inclusive), Phanerogamia, pt. II: Solanaceae, Scrophulariaceae, Gesneriaceae, Acanthaceae, Verbenaceae, Labiatae, Plantaginaceae, Thymeleaceae, Urticaceae, and some 15 smaller orders. WE 16.1-16.11.

Records of the United States Exploring Expedition, 1838-1842 (inclusive), Bundle of proofs of plates, some corrected. WE 26.

Records of the United States Exploring Expedition, 1838-1842 (inclusive), Letter from Charles Wilkes to Asa Gray, Washington City, March 6, 1858, enclosing a small drawings, also a receipt for payment to Isaac Sprague for Wilkes Expedition illustration work. WE 17.

Records of the United States Exploring Expedition, 1838-1842 (inclusive), Phanerogamia, pt. II: Caprifoliaceae, Rubiaceae, Valerianeae, Calycereae, Compositae, Suborder I Tubuliflorae. WE 13.1-13.6.

Records of the United States Exploring Expedition, 1838-1842 (inclusive), Blue covered notebook titled "Compositae." List of Compositae in Rio Negro, Patagonia, Tierra del Fuego, Chile, Peru, Sandwich Islands [Hawaii], Tahiti, Samoa, New South Wales, New Zealand: Lord Auckland Island. WE 6.